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Selective solar photocatalytic oxidation of ethylbenzene on C, N, and S doped TiO2

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Abstract

The liquid-phase photo-oxidation of ethylbenzene (EB) is investigated in solar light with air/O2/N2 at atmospheric pressure, in a batch reactor using acetonitrile medium. It is carried out over TiO2 doped with C, N, and S (TCNS) photocatalyst samples. The photocatalytic oxidation yielded acetophenone (33%) and 1-phenylethanol (21%) at 56% conversion of EB during a 6-h irradiation time. This product distribution indicates that C–H bond activation has occurred only at the alkyl chain. The effects of the EB to water content ratio, amount of photocatalyst and its sustainability, pH, have been studied. It is illustrated that the reaction carried out by this environmentally friendly photocatalysis is truly heterogeneous under mild conditions using solar light and no waste generation. An optimum loading of TCNS5 was observed for the photo-oxidation of EB.

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Acknowledgments

The authors P.A.K.R. and M.S. thank the Council of Scientific and Industrial Research (CSIR) (New Delhi, India) Emeritus Scientist Scheme.

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Authors and Affiliations

  1. Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology, Hyderabad, 500607, India

    Basavaraju Srinivas, Police Anil Kumar Reddy, Mucharla Rajesh, Valluri Durga Kumari & Machiraju Subrahmanyam

  2. Department of Chemistry and Chemical Technology, Vidyasagar University, Midnapur, India

    Bhudev Ranjan De

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  1. Basavaraju Srinivas
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  2. Police Anil Kumar Reddy
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  3. Mucharla Rajesh
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  4. Valluri Durga Kumari
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Correspondence to Machiraju Subrahmanyam.

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Srinivas, B., Anil Kumar Reddy, P., Rajesh, M. et al. Selective solar photocatalytic oxidation of ethylbenzene on C, N, and S doped TiO2 . Res Chem Intermed 37, 901–918 (2011). https://doi.org/10.1007/s11164-011-0298-7

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  • DOI: https://doi.org/10.1007/s11164-011-0298-7

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